Portable weighing-scale.



No. 634,|62. Patented Oct. 3, |899.

W. S. BRACKTLE.

PORTABLE WEIGHING SCALE.

(Application led Mar. 22, 1898.)

(No Model.)

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I m/enar.-

UNITED STATES PATENT EEIcE.

VALLACE S. BRAOKTLE, OF OAKLAND, CALFORNIA.

PORTABLE WElGHlNGESCALE..

SPECIFICATION forming part of Letters Patent No. 634,162, dated October3, 1899.

Application filed March Z2, 1898. Serial No. 674,825. (No model.)

To @ZZ whom t may concern:

Be it known that I, WALLACE S. BRACKTLE, a citizen of the United Statesof America, residing in the city of Oakland, county of Alameda, andState of California have invented certain new and useful Improvements inPocket Weighing-Scales, of which the following is a specification.

My invention relates to improvements in weighing scales; and it has forits object mainly the production of pocket or portable scales for theuse of miners and assayers to weigh gold and silver.

The improvements constituting the said invention comprise certain novelparts and combination of parts, as hereinafter described, and pointedout in the claim at the end of this specification, reference being hadto the accompanying drawings, forming a part hereof.

Figure l of the drawings is a view in perspective of my improved scalemounted in a pocket-case. Fig. 2 is a plan or top view of the scale.Fig. 2 is a view in detail of the sliding weight. Fig. 3 is an elevationtaken from the right-hand side of Fig. 2 or Fig. fit, and Fig. 4 is afront view in elevation.

A indicates the beam of the scale; B, the pan on the end 5 C, thefulcruln-block, and C' the fulcrum.

D is the scale-bar or part bearing the divisions ofthe scale,and E isthe sliding weight. The divisions on this bar are graduated topennyweights and fractions of a pennyweight Troy.

E is an auxiliary weight that when placed on the outer end of the beamincreases the weighing capacity of the scale by one-half of an ounce.

rlhe beam A is a rod having on one end a ring A and provided withfulcrum-points O2, on which it is suspended and balanced in adjustablebearing-screws C3 between the upright arms of a yoke D or forkedstandard C', iixed in a bed-block (l.

The pan B is formed with a concave or rounded bottom, deepest in thecenter, and is suspended and balanced on pivots B B in the ring A@ Thegraduation-marks are made on a flat bar or rail D, that is attached tothe rod A 5o so as to stand with a downward inclination along the frontof the beam and at an angle that allows the marks to be read easily fromabove.

The sliding weight E is bored to slide easily on the rod A, and on oneside is provided with a slit E2 to admit the scale-bar D. This weight isplaced on the rod A before the scalebar D is attached to the rod, sothat the weight is confined on the rod and cannot slip off, while it isfree to be moved along the rod. The auxiliary weight E has a centralaperture to iit the outer end of the rod A, which is of suiicient lengthbeyond the end of the scale-barD to hold this weight when it is used.

For Aconvenience in carrying the scale the base O is mounted on thebottom lV of 'an inclosing case, which is provided with a cover Vllaving thus fully described my invention, what l claim as new therein,and desire to secure by Letters Patent, is-

The herein-described weighing-scale, comprising a base-block, a beamfulcrumed on the base-block having a yoke on one end, a pan suspended onpivots in the yoke, a scalebar attached to the beam at the ends to standat an angle along the front thereof, and a slidable weight composed of acylindrical block bored to lit and slide on the beam and having a slotin one side adapted to take the edge of the scale-bar, as set forth.

ln testimony that l claim the foregoing l have hereunto set my hand andseal.

WALLACE S. BRACKTLE. ll'litnesses:

EDWARD E. OsBoEN, M. REGNEE.

